Castor Association of America DNA Project
 
This worksheet is based on data found at Relative Genetics

The site appears not to exhist any more.


  Probabilities  
Distance Match 26 Markers
MCRA
Match 43 Markers
MRCA
Notes
0 26/26 < 6 Gens 43/43 < 4 Gens A Perfect Match
1 25/26 < 12 Gens 42/43 < 8 Gens  
2 24/26 12-15 Gens 41/43 < 13 Gens  
3 23/26 unlikely that an
ancetral line
is shared
40/43 may share a
paternal line
If there is a paper trail that shows a connection in < 17 generations and you have a 23/26 match, more individuals need to be tested to establish the patterns of the ancestral line.

If there is a paper trail that shows a connection within 12-15 generations and you have a 40/43 match, more individuals need to be tested to establish the patterns of the ancestral line.
4 22/26 probably
not related
39/43 unlikely that an
ancetral line
is shared
If you have more than 3 mismatches in a 26 marker test you are probably not related. If the paper trail suggests you are related, more members from yours and other lines need to be tested to establish the connections.

With 4 mismatches in a 43 marker test, testing more individuals can help to pinpoint the generations where the mutations occurred.
 




Last updated on 13 February 2008